Cement carbon
[建] 渗碳
🧩 词语组成解析
cement
[si'ment]
n. 水泥;胶合剂;胶接剂;粘固粉;
vt. 粘牢;巩固;（用水泥、胶等）粘结;在…上抹水泥;
🗣️ 情景例句
No. It's not.
不是。
Courtesy costs nothing.
谦虚恭敬，不用分文。
No, I didn't. I didn't have his telephone number.
不，没有。我没有他的电话号码。